Hemoglobinometer



Oct. 20, 1936.

E. FRITZSCHING HEMOGLOBINOMETER Filed May 23, 1955 m55/zr j murs/e h PA PE/i HERE um um INVENTOR. EAW/N Fk/rzsaH/Ns YBY ATTORNEY.

Patented Get. 20, 1936 PATENT ori-ics aosao'zs nEMoGLomNoMErEa Erwin Fritzscliing, Nepera Park, N. Y., assignor to Bare Chemicals, Inc., Nepera Park, N. Y., a corporation of New York Application May 23, 1935, Serial No. 23,123

Claims. `(Cl. Ils-1 4) My present invention relates to hemoglobinometers foruse in determining the percentage of hemoglobin in the blood.

The principal general object of my present in- 5 vention is to provide hemoglobinometers characterized by simplicity of construction especially adapting them for use as permanent records, each one being relatively thin and somewhat the same as index cards, so thatthey may be conven- 10 iently led.

'Ihe more specific objects of the invention include the provision 'of hemoglobinometers constructed of foldable material, such as paper or cardboard, divided by creases into a plurality oi panels foldable one over the other, andhaving incorporated therein a rotatable disk carrying areas ings therethru to facilitate comparison with a sample of blood on a piece of paper inserted in the folder, as hereinafter pointed out.

Another object of the invention is to provide a hemoglobinometer in the nature of a fiat folder, having on one flap a record chart for the name, age, weight, and other characteristics of the patient, asI well as the results of previous tests, with the chart so arranged as to afford ready reference thereto while making an actual test.

` The foregoing and other objects and advantages of the invention will become apparent and will be pointed out during the course of the following detailed description of the accompanying drawing, in which- Fig. 1 is a plan view of a blank or sheet from which a preferred form of my hemoglobinometer is constructed;

Fig. 2 is a sectional view taken on 'the line 2-2 of Fig. 1;

Fig. 3 is a fragmentary view showing the' sheetl of Fig. 1 partly folded, or in the process of assembly;

Fig. 4 is a perspective view of a complete hemoglobinometer constructed from the blank of Fig. 1, with a piece of paper having thereon the representation of thesample of blood'- in position to be inserted;

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 3; l Fig. 6 is an end elevation of the complete device of Fig. 4, when in closed position, and showy ing in dot-and-dash lines the cover or panel bearing the record chart in open position; and

- Fig. 'l is a plan view of a fragment of a sheet of. paper sub-divided to provide slips to receive the blood samples. j Referring to Fig. 1, the letters A, B, C, and D of colors of predetermined character with open-4 designate, respectively, the panels of -a sheet or blank from which the hemoglobinometer is constructed, and connected respectively along creases va, 9 and In.

As shown most clearly in Figs. 1, 2, 3 and 5, 5 the panel A is provided with arcuate slits which permit wings or tabs II to be bent up from the panel so that a disk I2 may be secured to the panel A for rotation with respect thereto by inserting the tabs II through the circular opening 10 I3 in the disk and then bending the tabs down against the front face of the disk.

The disk is shown provided with a plurality of circular areas I4 in different tones or shades of red scientifically determined to correspond to dif- 1 5 ferent colors according to the hemoglobin con-1 Atent of blood. The panel A is preferably inot as wide as the panels B and C, and the disk I2 is so arranged on panel A and of such size that an arc of the outer edge of the disk projects beyond 20 the edge I5 of the panel A.- This last feature is provided so that when the panel A is folded along the crease 8 down against the panel B the projecting edge of the disk will extend across an elongated opening IS located`between panels B and C 25 and along the crease 9, as shown in Fig. 3:

The panel A is provided in its top edge with an elongated slot I1 extending down behind a portion of the disk I2 and past which the areas I4 move vas the disk is rotated. Similarly the panel 30 B is provided with a slot .I8 in its upper edge adaptedV to register with the slot I'l when the panel A is folded over on panel B, as in the position of Fig. 3. Beneath the slot I8 in the panel B is a sight opening I9, past which the areas I4 35 must also move as the disk is rotated. I have shown opening I9 of substantially key-hole-shape so that the lower portion thereof will expose the indicating numerals or indicia adjacent each of the areas I4 as the areas -are moved past the 40 opening I9, as shown in Fig. 4.

The panel C is preferably provided with indicating indicia Insert filter paper here, as indicated generally, by the numeral 20, at its top approximate center, alined with the notches I1 and 45 I8 when the blank is folded to the position of Fig. 4. The lower edge .of panel B is notched as at 2 I.

The inner face of the panel D is preferably provided with a chart to contain the name of the 50 patient or person whose blood is tobe tested, and spaces in which there may be recorded the results of the diierent tests from time to time for reference in determining the progress of the case. The blank D also has at its outer edge a tab 22 55 on which may be written or recorded identincation of the case so that the hemoglobinometer may be readily selected from a file box, drawer or case by reference to the data on the tab 22. This tab projects beyond the opposite side of the folded or assembled hemoglobinometer as shown in Fia'. 6.

In forming the hemoglobinometer, the openings Il, il, Il, and I1 and the slits which form the tabs Il, may be simultaneously formed by any suitable implement, as also may be the creases l, I and Il. When the disk I2 has been rotatably secured to the panel A, as shown and above described, to complete formation of the hemoglobinometer, the panel A is folded over on crease I to bring the slots Il and Il into registry and to place the face of the disk I2 against the inner surface of panel B, so that the areas I4 will be so positioned as to pass the opening Il. The panel C (or the back of panel A) may be spotted with adhesive,'as indicated at 22. to hold the panels A, B and C in the form of an open ended envelope with the slots I1 and Il in registry with the indicia I2. This provides a pocket into which the strips of paper containing the samples of blood may be inserted between disk I2 and panel C. and between the edges of the slot I1. In Fig. 4,

f I have indicated the slip of paper by the numeral 24 having thereon a spot of blood 25. Obviously, when this piece of paper, which is preferably narrower than slot I1, is inserted into the slot and between the disk I2 and panel C, it will be prevented from rotating when the disc I2 is rotated. Furthermore, the depth of the slot I1 with respect In the size of the slip 24, is preferably such that the area covered by the blood adjacent one end of the slip will register with openings 26 in the areas I4 of the disk I2. Thus the areas I4 are directly over the spot of blood and the spot of blood may be observed thru openings 2O in direct comparison with the areas i4.

As will be noted, in Figs. 3 and 4 an edge of the disk I2, when the panels are folded one on the other, extends thru the slot I 6 so that the exposed edge of the disk, which is preferably roughened or scalloped, may be engaged by the finger to rotate the disk.

As should also be obvious, the cutaway portion 2| of panel B, as best shown in Fig. 4, provides for access to the supply of paper containing the strips 24, which may be housed or kept in the pocket between panels B and A beneath disk I2. The supply of paper is shown in Fig. 7, as comprising a sheet designated generally by the num'eral 21, having scored lines 28 marking 0R or dividing the slips 24 which may be removed from the sheet of paper by tearing along the lines 22. The reserve supply or sheet 21 is folded into compact form so that it will t within the pocket between the panels A and B beneath the disk I2, as shown in Fig. 4.

From the foregoing it should be obvious that a hemoglobinometer constructed in accordance with my invention, provides a device of relatively simple and compact form, and which may be made entirely of paper or cardboard. Further, the complete device is of card-like form so that a great number of them may be filed in a usual fiber or drawer box with the tabs 22 projecting upwardly and bearing the indicia identifying the person to whom the data on the face of the panel D relates.

A supply of these hemoglobinometers may be kept in a relatively small space, and when one is to be used, it is removed, preferably with the sheet 21 inserted in the pocket as shown in Fig. 4. The person using it may then or later write on the inner face of the panel Dv the identifying data, remove the supply of strips 21 from the pocket, tear on one of the strips, secure a drop of blood, and place it on the removed strip, and then insert the strip into the slot behind the disk I2 so that as the disk is rotated in the manner above speciiied, the areas I4 and openings 26 therein come into registry with the blood for ready and accurate comparison. After such test is made, the proper data may be entered on one of the lines on the inner face of the panel D, and the hemoglobinometer with the supply of strips therein placed in the proper ille, according to the filing rsystem in use.

Furthermore, the hemoglobinometers embodying my invention are well adapted to be carried on the person, as in a pocket or case, so that they may be used at various places, and later filed with the permanent record lentered thereon.

I claim:

1. A hemoglobinometer comprising, a sheet of foldable material having thereon a plurality of panels folded one over the other in superimposed relation to form an envelope-like substantially fiat device, an indicating element rotatably attached to one of said panels and having thereon a plurality of areas of colors with openings provided in said element associated with said areas, va marginal portion of said element projecting beyond one edge of said one panel, said sheet being constructed with an opening on the fold line between two of its panels, alined with said projecting portion of the element and thru which said portion of the element projects to facilitate rotation of said element, and another of said panels serving as a cover for said device and having thereon indicia on which recordings may be made.

2. A hemoglobinometer comprising, an elongated sheet of foldable material having thereon a plurality of creasesy dividing the sheet into a plurality of panels folded on said creases one over the other, an indicating element rotatably attached to one of said panels and having thereon a plurality of areas of colors, with openings provided in said element associated with said areas, said one panel being folded against a second panel constructed with a sight opening thru which said areas of colors may be observed as said element rotates, and said sheet being constructed with an opening on the crease between said second panel and a third of said panels thru which an edge of said element projects to be engaged by a linger to facilitate rotation of said element.

3. A hemoglobinometer comprising, an elongated sheet of foldable material having thereon a plurality of creases dividing the sheet into a plurality of panels folded on said creases one over the other, an indicating element rotatably attached to one of said panels and having thereon a plurality of areas of colors, with openings provided in said element associated with said areas, said one panel being folded against a second panel constructed with a sight opening thru which said areas of colors may be observed as said element rotates, said sheet being constructed with an opening on the crease between said second panel and a third of said panels thru which an edge of said element projects to be engaged by a finger to facilitate rotation of said element, and means to hold a slip of paper or the like, containing a specimen thereon beneath said element for direct comparison with the colored areas on said :,osaova element during rotation thereof past said sight opening.

4. A hemoglobinometer comprising, an elongated sheet of foldable material having thereon a plurality of creases dividing the sheet into a plurality of panels, an indicating element rotatably attached to one of said panels and having thereon a plurality of'areas of colors, with openings provided in said element associated with said areas, said one panel being folded against a second panel constructed with a sight opening thru which said area of colors may be observed as said element rotates, said sheet being constructed with an opening on the crease between said second panel and a third panel thru which an edge of said element projects to be engaged by a finger to effect rotation of said element, and means to hold a slip of paper or the like containing a specimen beneath said element for direct comparison with the colored areas on said element during rotation thereof past said sight opening.

5. A hemoglobinometer comprising, an elongated sheet of foldable material having thereon a plurality of creases dividing the sheet into a plurality of panels, van indicating element rotatably attached to one of: said panels and having thereon a plurality of areas of colors, with openings provided in said element associated with said areas, said one panel being folded against a second panel constructed with a sight opening thru which said areas of colors may be observed as said element rotates. said sheet being constructed with an opening on the crease between said second panel and a third panel thru which an edge of said element projects to be engaged by a finger to eil'ect rotation of said element, means to hold a slip of paper or the like containing a specimen beneath said element for direct comparison with the colored areas on said element during rotation thereof past said sight opening, and a fourth flap serving as a cover and having thereon indicia to receive records of `the comparisons made between the specimens and colored areas. ERWIN FRITZSCHING. 

